Electrical coil and method of winding same.



M. HELM.

ELECTRICAL COIL AND METHOD 0F WINDNG SAME. APPLICATION FILED MNA 1913i.'

1,080,830. Patented. Dec. Q, 1911.3.

3 SHEETS-SHEET 1.

i M. HELM. ELECTRICAL COIL AND METHOD OF WINDING SAME.

APPLICATION FILED JANA, 1913.

' Patented Dec. 9, 1913.

3BEEETS-SHBEE2.

M. HELM.

ELECTRICAL con; AND Mmmm 0F mmm@ SAME.

`A?PIJIOAIION FILED JARA. 1913.

Patented Dec. 9, 1913 2i. NVENToa UNITED sTa'ins* MAX HELM, F PANXOW,NEAR BERLIN,

l Lesson, or nostro Specification of Letters Patent.

PATENT ormcn GERMANY, ASSIGNOR TO JIQVSEETE/C ROBERT N, MASSAC"HUSETI'SnPatentes a, ifa-is.

Appneanoa sied ramiary a, 1913. serial no. ricerca,

To all whom, t may concern; i

Be it known that I, MAX HELM, a subject of the Emperor ci Germany,residing at Pankow, near Berlin, Germany, have invented certain new anduseful Improvements -in Electrical Coils and Methods of Winding Same, ofwhich the following is a specification.

My invention relates to coils for electrical 1.0 purposes, such asmagnet and resistance insulating material 2.0 system known as the spectto the winding-spindle or simultaneously, the guide and both operatedmaterial having a quick for the insulatin 3 n traverse while t e guideAfor the given a relatively slow traverse.

In this 80 way the coils of wire are laid side by side 85 stran s, whichmay be of cotton yarn 46 other retaining means,

ble thanxthe usual form,

j oise arrangement of the windings,

, in close juxtaposition while the strands of insulating material arewound diagonallyT or cross-wise thereof and woven in and out amon thecoils of wire'. The insulating or other textile liber, iiat tape or anysuitable attenuated material, form a mechanical binder for the wire]coils, effeetnally linlting them together and retaining them in 4Q-their proper position, while also aiding in insulating the coils onefrom another 4and providing insulation between the layers. Through thissystem I am enabled to build up a coil without the 'use of spoolheads-or and when completed much more staunch and staand possesses indueto the pretheir pro my new coil is creased electrical eiiiciency tectionagainst displacement, and the imbb figur-e1 issn eulargedisde--rjw myl,proved insulation therein. .4 j The invention is .fiully described inthe following specification, illustrubedzhytthe accompanying drawings,in whichmandrel, f

5 but for some improved electrical coil with the outer layer of wirewindings shown as not quite completed; Fig. 2, a transverse sectionalView of the coil taken on the line X-X of Fig. l; Fig, 3, an end View ofthe machine employed for winding the coil showing the double guildearrangement; Fig, 4T, a side view of the same with the fram-e of themachine shown in section, talren on the line Y-Y of Fig. 3. i

Referring first to Figs. 1 and 2, M desig nates a magnet or resistancecoil made up of alternate layers of wire windings w and yarn windings y.The coil is preferably wound on a tube m of paper, fiber or othersuitable material which can be removed if desired after thev coil iscompleted. The wire for the coil. is usually of the insulated varietyhaving a corering of strands of yarn or thread Wound or braided aroundit, or it might be insulated hy the' process of cnam cling or otherwisecoating its exterior.

, The strands g/ of binding and insulating material may he of ordinarycotton yarn or other textile thread, or, if desired, narrow tape mightbe substituted therefor. In the drawings I have shown a single strand ofWire 1syarn .1/ wound in among the coils of wire fw,

vantageous to Wind the yarn in multiple, that is, using several strandswhich virtun ally form a flat tape. rihe coil M is huilt up with datends and the layers of ,wire and insulating material alternate asillustrated in. Fig. 2. It is to he noted, however, that the strands yweave in and out among the` wire windings w, that is to say, they lieover and under the wire at regular intervals and in this way the tyingtogether and binding er reinforcement. of the coils is eilected.

The method of winding the coil will be more fully understood from thefollowing description of the arrangement and operation of the machineemployed for produc-- ing it, and therefore reference is now .made toFigs. 3 and .fi which'sh'ow the preferred embodiment of the windingmechanism. i Supported in hearings in the main frame A of `the machineis a winding-spindle b arranged to4 berotated from any source of powerthrough the medium of a driving pulg# ley B. r'hespindle b is connectedto drive 'a ipenllelahaf e which carries the cams 'and wire-guidepurposes ithas heen found ad` .C nndr' arting reciprocation to thef-`ist suitable means for connecting the spindle and, cam-shaft rotatively,such as ulleys and belts or a train or gearing, mav eem- .pivoted on thecam-shaft a Aand carpyfdel pending counterweighted. arms df'nd e. TheguidesG and Hare arranged on opposite sides of the winding-spindle b andare adapted to move outward therefrom on their respectivetraverse-frames as thelayers of winding are built up to form the coil.The wireguide H Y preferably carries `a wheel or pulley k over whichthewire runs as it leads to the guide-notch k', While the yarn y leadsdirectly to the notch g in the guide G. .The spindle b rotates in thed1- rection indicated by the arrowQgs'eel Fig. 3, and the guide Hisvinverted so that the wire fw leads through .its under side while theyarn 3y delivers from the top. of the' guide G. Both' guides aremaintaanedconstantly in contacta-with the win f' :through the agencyol't'heirl counterweig lted traverseframes so that they coils of yarnand wire are laid very precisely and accurately'to inlsure their 'properrelation. To l sensitive, yielding pressure of t e guides against thecoil it is preferable to employ ein springs el and e arranged betweentrtnd the backs of the frames D and that the guides can move freely to aslight extent in pins-ing over the windings as* they traverse along theface of the coil M. The uides G and H are carried at the ends o'traverse-rods K and L which slide in the frames D and E. The rods K andL are attached to runners 1c and l at their op' posite ends and therunners carry studs or rolls lo and Z which .engage with grooves c', cin the cams C, C. The cam C which reci roca'tes the thread-guide is faston the sha t c and is rotated positively therewith, the ratio of speedbetween it and the;.wind

ing-spindle being regulated by'suitable adjusting devices, not hereshown, but well known in connection with their use on windl ingmachines. The cam C which reciprocates lwire-guide is free rotativelyofthe shaft c and .is driven at a than the cam C through a separateconnection with the winding-spindle as now described:

The cam C is preferably mounted on 'a' sleeve or bushing c which'extends through the side bearing a of the frame A and forms, part of thegear-.casing A. -At the center of thecamshaft c'is a ratchet-wheel F,having peripheral teeth f, also mounted on the bushing c and formedwith-.alhub )which islsplined into -thee'ndfof the hu ,dfthe rovide uythe lever-Scan be altere the movement'tof-.the lever much'slower speed.

cam C' or otherwise secured rota't'ivcly therewith. A rocker-arm N, seeFig. 3, constructed intwo halves n, n, as shown more plainly in Fig. 4,straddles the ratchet- Wheel F and is mounted on the hub of saidwheel tomove independently thereof. Secured to the base of the-frame A is astandard or bracket O in which is pivoted a rockable member o carryingan arcuate springplate P arran ed substantially concentric with the axiso the cam-shaft c. The upper end of the plate P bears against the end ofthe rocker-arm vN to apply friction thereto and revent a too freemovement thereof. The ljower end of the plate carries a roll p whichbears against the teeth of the ratchet-Wheel F to rest-rain the latterfrom unwarranted movement. Pivoted on the opposite end of the rocker-armN is a pawl R formed with its inner end adapted to enygage 'the lteethof the ratchet-wheel 'F and connected at its outer end to a rod or linkr. The upper end ofthe link r is connected to the end of a rookablelever S pivoted at s' on a bracket T secured tothe top of the frame A.The inner end of the lever S carries a roll s which bearsv on the.peripher of the "cam-U secured on the winding- 4spindle b to.be`rotated therewith. A disk V, preferably formed with a knurled pel'iphery, is secured to theend of a-stud o which is' rotatably mountedin a bearing in .bracket T. AVcoiledI spring g arranged in a pocket t ofthe bracket T hears at its upper end' againsta shoe g which pressesagainst the stud v-v'trzprovide resistance to =the turning-of. the diskV. The lower end ofthe spring bears on the innerlend of thelever S anserves to'maintain the roll e in contact withthe' 'cam U. The disk 'Vispositioned' abovcf'the. outer end of the lever w1th itsedge adapted toContact therewith,l andy is' arranged ori-the stud v "eccentric to the.axis of the latter. It will "thus be seen that by turning the disk therelation of. fits lowered e to the top ci? and in this Way under action,of the spring g isadjusted to vary the extent of motion im arted't-o itbythe cam U.

The metho `of-winding the coils on the -niachine is as'follows Theyarng/ or other lnsulati l sup lyt rough'ithe notchdq materia-1 is ledfrom its source of in the threadgui' e G.andx'tsend secure tothefw'rndingwheel h; and through the notch h in the ouide H andalsosecuredto the spindle, a..

e endlbeing generally left for electrical connection `and the machine isthen ready to start a er, the guides have both been pflaced'clse#152155? Jgpindle or tube.y As the spindle b rotatesto wind u p the wireandl ,yarn lthecam U will impart. a rocking nolas 'nected cam C. AAgathe'back over `tion to the lever lS which istiansmitted to the arm Nthrough the link r. Each time the arm N is Irocked downward the 'pavl Ris carried into engagement with the lteeth f on the ratchet-wheelwF anda'fsli-'glxtfrottive impulse is imparted to the-#wheel audits con# lriendof the lever S lis rocked upw'x'iglpdrjthe 'influence of plained,the friction `rolllp carriedV by the n spfrin fp'lte'l? @cts to hold theratchet-*Wheel an cam C frombackward rotation.; The

I cam o' nume slowiyrume `in are air-eenen indicated by thetr'rew 3, :3,and the wirefguide. H is traversed fromiohe end of the coil to theother. B'y adjusting the disk V, as before explained',thel extent fofmovement ofthe leve ',S 'an be varied to regulate'the ratioofspeedlietween the spindle bv and the cani C', andin this way the speedof traverse of the guide is controlled to lay the wire fw in closelyyadjacent coils as illustrated in Fig. l. It will be understood that therange of adjustxnentof this part of the-mechanism is uch that the,finest or coarsest wire used fo such purposes can be 4wound with th'edesired close 'juxtaposition o` the coils Meanwhile, during the Wind-ring of the jwire coils, the thread-guide/G is'. beingVreciprocatedf-,vi'apidlv back and' forthV rivenv at a much.' fasterrate, of' sp'enedylthan' that off the' caf'n" bythe Vcam G'whichi is t Cthrough lits separterconnection with vthe chanical' and'electricaladvantages "as now. explained; In the lir'stj place, the coils may; bebuilt/' with; flatendsfand wound to a spindle b2 This lays the yarnor'other binding and insulating' material1l inf cross-v coils whichintermingle'with thewiie Windv z ingsl and at the` same ytime build\ip'`insulat-'v ing and cushioning layers between the wire slightlylonger traverse to the latterithan" the traverse imparted to 'the guide`H by-"thez caml C. This provides that the layers;v 'of-fv insulatinga'aterial will extend be ond theV wire layers a slight vdistance atetheifg'fend soas to form a moresubstantial foundationfor the end @oilsof wire,' althoughf'flhisis not essential, f

The improved coil producedbktlielabove;

described systemyofwinding has Various meconsiderab e' kdianxterigl.,without vthe use `:"of spool yheads'or fend' flanges'.- The windin maybe accomplished'at-much lmore rapi rate tdlayr'fieretoforeahdfi'thefwire laid vwith greater recisiol "andl accuracy owing to theeffect o the coils' of y"insulating material whichliuKjandbind the coilsof wire to gether and @presidev vcushioning or reinforcinglyershlbctweenthe *layersV of wire. Fur-f' thermorejniy new'methd ofwindin'g'th Aany other suita coils provides more complete insulationwhich removes the danger of short-circuit ing and increases theelectrical elliciency of the coil. Another important feature is thatcoils wound by this system are more stable and permanent because thewire windings are less liable to become displaced. That is vto say, thelinking and binding together of y the wire oils b 'the strands ofinsulating material `u'fm'ri es `a reinforced structure which 1smore'capable of resisting vthe `d1s- 'placement-of'thewire Windings'fromthe efectof'expan'sion and contractiony due to A changes in temperature.Foritliis reason mjy' new coil is applicable to more 'diversified' usesthan coilsv manufacti'ed by the ordi nary process and it can be madepractically Weatherproof bglcoating it-with--shella'c or e" waterproof Vcovering. Various modifications might be made in the s stem ofwindinherein disclosed without eparting ,from t e' spirit or sco e o f thepresent inv iol-y For instance, at wire might be usedinevplaoe oftheround` wire here shown and. materials other than those' above describedmight be employed for the binding and insulatlngwindings.` Different lspeed ratios between the wireguide and thread-guidemight be arrangedashdesired,` l

and a. greater or less number of windings enjplloyecl.;- In place of oneguide .for the. f." 'jrarn',`lseveral could be arranged to be oper-'ated vsxxd'u'ltaueously at different ints about circumference of thecoi be used for 'reciprocating the u bodimeiit of thfeflinvention`herein' disclosed,- i'

215. A coil for' electrical-:purposes layers ofhelically-*woundconducting vniaterial,`and windings of insulating-matel'ial 4 strandslof insulating-material interwoven intermingling therewith, with 'theover and under the separate turns of conducting-material in the layersto bindthe 'flatter in Vplace and reinforce 'thestructure. l l2. A coilforelectrical purposes consistling (if layers'of helical Wire windings,and i :windings otinsulating-materi'al vwould diagonally or crosswisethereof' and inten woven over and under separate turns of wire in thelayers' to bind theI latter in place and reinforce the structure., i

3; A coil for electrical purposes consist 'ing oflayers of heligal'wirewindings and and other Witheet limiting, myself to tiieexact A materialdiagonally or crosswise thereof, with the windings ofinsulating-,material passing over two or more turns and ander theremaining turnsi in each layer of conductinganaterial to bind the latterin place and reinforce the structure.

5. An improved method of manufacturing electrical coils consisting indepositing Wire on a core in layers of helical windings and on ay corein layers of simultaneously depositing yarn or thread in cross-windingsintermingling with the Wire windings and passing through the layers ofWire to hind the latter in place.

6. An improvedmethod of manufacturing electrical coils consisting indepositing Wire helical windings and and reinforce the coil MAXl/Vitnesses: v

LUCLEN MEMMINGER, LOUIS RINUY,

Wire layers, the separate strands of yarn throughout its lengthl 4

